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Atomic number is equal to

  • Number of electrons
  • Number of nutron
  • Number of protons
  • Total number of protons and neutrons
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1. Aspirin is

  • acetyl salicylic acid
  • sodium salicylate
  • methyl salicylate
  • ethyl salicylate

2. The luster of a metal is due to :

  • high polishing
  • high density
  • chemical inertness
  • presence of free electrons

3. Elements that show the properties of both metals and non metals are called ?

  • metalloids
  • allotropes
  • alloys
  • colloids

4. Homo nuclear molecules contain ?

  • polar bond
  • covalent bond
  • ionic bond
  • coordinate bond

5. Which metal is heaviest ?

  • osmium
  • mercury
  • iron
  • nickle
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